Abstract
We report a rare case of granular cell tumor of the common bile duct. A 62-year-old woman who underwent total gastrectomy, lymph node dissection, Roux-Y reconstruction, and splenectomy for gastric cancer in December, 2007 was found to have a palpable tumor, 8 mm in diameter, in the middle common bile duct during surgery and confirmed after additional examination. An enhanced CT scan of the abdomen showed a round tumorous lesion in the middle common bile duct without bile duct wall thickness. Cholecystectomy, choledocholithotomy, and choledochoduodenostomy were conducted based on a preoperative diagnosis of a common bile duct tumor in March, 2008. The lesion was a yellowish-white submucosal tumor. Immunohistochemical study of the resected specimen confirmed granular cell tumor of the common bile duct. Postoperative progress was uneventful with no recurrence till the present. The occurrence of granular cell tumor in the biliary tree is extremely rare and, to the best of our knowledge, our case is only the fifth of such cases reported in Japan.
